Charge-heater for explosive-motors



G. A. RICHARDS.

CHARGE HEATER FOR EXPLOSIVE MOTORS.

APPLICATION FAILED 1uNE5. 1920.

1,399,321 f Patented Dec. 6, 1921.

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PATENT OFFICE.

GEORGE A. RICHAnnsoF PUEBLO, COLORADO.

CHARGE-HEATER FOR EXPLOSIVE-MOTORS.

Specification of Letters Patent.

Patented Dec. 6, 1921.

Application inea :rune 5. 1920. s`eria1 No. 386,847.

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Be it known that I, GEORGE A. RICHARDS, citizen of the United Stat-es of America, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented certain new and useful `Improvements in' Charge-Heaters for Explosive-Motors, of which the following is a specification.

The primary object of the invention is the provision of an automatic heater for the explosive charge of an internal combustion engine whereby the temperature thereof is raised at a point between the intake manifold and the explosion chamber, the device being simple in construction, easy and inexpensive to manufacture.

A further. object of the invention is the provision of a heating attachment readily installed upon an explosive motor for heating the charge or mixture by means of waste he'at substantially at the point of entrance to the explosion chamber of the motor.

A still further object of the invention is to provide means for the direct heating of the explosive mixture of a motor by the conduct of a quantity of waste heat to the mixture by conduction and whereby the running of the motor insures the proper temperature of the explosive mixture supplied thereto.

lVith these general objects in view, the invention consists of the novel combination and arrangement of parts hereinafter more fully described in connection with the accompanying drawing and in which like reference characters designate corresponding parts throughout the several views.

In the drawing,

Figure 1 is an elevational view of a motor illustrating four of my devices operatively positioned thereon,

Fig 2 is an enlarged transverse sectional view'taken upon line lll-II of Fig. 1, and

Fig. 3 is a perspective view of the device detached illustrating by dotted lines one of the securing bands bent in a position for attaching the device to a heating element.

It being understood that my device is adaptable for ready attachment to any kind of explosive motor, a simple form thereof is herein illustrated in connection with a motor 10 having a gasolene intake or Y 11 leading from the carbureter 12 with the exhaust pipe or manifold 13 positioned longitudinally of the horizontal portion 14 of the intake at one side of the motor 10. A metallic plate 14 of high heat conductivity has an annular struck-up boss 15 forming a receiving seat or pocket for a circular piece of metal gauze or screen 16.

The b oss 15' is adapted for seating withinV the outer end of the inlet port 17 of the motor, an annular shoulder 18- being preferably provided for the purpose while a packing ring 19 surrounds the boss 15 engaging the outer face of the cylinder wall. The outlet nipple 20 upon the rear face of the intake pipe 14 rests against a ring 2l seated within the boss 15 upon the gauze 16, a packing 22 surrounds the ring 21 for contact by the nipple 20. The plate 14 has marginal portions 23 in the form of strips for wrapping around the exhaust pipe 13 in one direction while the main portion of the plate 14 is wrapped around the opposite side of the pipe 13 with the strips 23 having .their ends 24 bent around the corner portions 25 of said plate 14.

Itwill be understood that 'the intake manifold 11 is secured in position in any usual manner with the gauze in position as described.

The operation of the invention will be apparent from this detail description thereof, the exhaust gases from the explosion chambers heating the exhaust pipe 13, heat is communicated by the plate 14 surrounding and in contact with the exhaust pipe 13 to the metal gauze 16 lying within the incoming path of travel of the explosive mixture. The mixture from the carbureter 12 is thereby heated by the gauze 16 substantially at its point of entrance in the inlet port 17 of the motor 10, such heatingV being automatic and continuing during the running of the motor. If found desirable, an asbestos covering indicated by dotted lines at 26 in Fig. 2 of the drawing may be pro vided around the exhaust pipe 13 and the heating plate 14 for affording greater heating properties to the device. The plate 14 and gauze 16 are preferably formed of copper and by reason of the provision of a screen member for supplying the heat direotly to the mixture passing therethrough, a large heating surface is provided for the purpose..

While the form of the invention and its manner of attachment herein set forth is believed preferable, it will be understood that changes y may .be `made therein vvithout` departing from the spirit and scope of myV invention. Y

What is claimed asnew is:

1. A charge heater for motors, y.colirlprising means for conveying heat from the exhaust manifold to the intake pipes of a motor, said means including a metallic plate having portions .thereof `cut-away for encircling the: exhaust manifold with the cut-` away portions ofthe plate interlocked for retaining the same on the manifold, and a `screen supported in said plate to be heated thereby and interposed between the intake pipe and' intake manifold.

3. A charge heater for motors comprising means for conveying heat from the exhaust manifold. to. Ythe intake pipes of a motor, said means including a metallic plate, side strips struck out from 4.the plate with the plate :and strips bent inV opposite directions and secured to ,thel exhaust manifold, .and `means .carried by 1the `plate to be heated thereby and interposed between the intakepipe and ,exhaust manifold. 4

In testimony whereof I aix. my signature.

' GEORGE A. RICHARDS. 

